125539189 has 4 divisors (see below), whose sum is σ = 125575200. Its totient is φ = 125503180.

The previous prime is 125539157. The next prime is 125539201. The reversal of 125539189 is 981935521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 125539189 - 2⁵ = 125539157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125539109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12139 + ... + 19960.

It is an arithmetic number, because the mean of its divisors is an integer number (31393800).

Almost surely, 2^125539189 is an apocalyptic number.

It is an amenable number.

125539189 is a deficient number, since it is larger than the sum of its proper divisors (36011).

125539189 is an equidigital number, since it uses as much as digits as its factorization.

125539189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36010.

The product of its digits is 97200, while the sum is 43.

The square root of 125539189 is about 11204.4272053506. The cubic root of 125539189 is about 500.7178874486.

The spelling of 125539189 in words is "one hundred twenty-five million, five hundred thirty-nine thousand, one hundred eighty-nine".